Gold heptafluoride
Gold heptafluoride
Gold heptafluoride
IUPAC name
Difluorinegold(V) fluoride
Other names
Gold heptafluoride
3D model (JSmol)
  • InChI=1S/Au.F2.5FH/c;1-2;;;;;/h;;5*1H/q+5;;;;;;/p-5
  • F[Au](F)(F)(F)F.FF
Molar mass 322.956 g/mol
Occupational safety and health (OHS/OSH):
Main hazards
Corrosive, toxic
Related compounds
Other cations
ReF7, IF7
Related compounds
AuF3, AuF5
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gold heptafluoride is a gold(V) compound with the empirical formula AuF7. The synthesis of this compound was first reported in 1986.[1] However, current calculations suggest that the structure of the synthesized molecule was actually a difluorine ligand on a gold pentafluoride core, AuF5·F2. That would make it the first difluorine complex and the first compound containing a fluorine atom with an oxidation state of zero. The gold(V)–difluorine complex is calculated to be 205 kJ/mol more stable than gold(VII) fluoride. The vibrational frequency at 734 cm−1 is the hallmark of the end-on coordinated difluorine molecule.[2]


  1. ^ Timakov, A. A.; Prusakov, V. N.; Drobyshevskii, Y. V. (1986). "Gold heptafluoride". Dokl. Akad. Nauk SSSR (in Russian). 291: 125–128. "Archived copy" (PDF). Archived from the original on 30 June 2022. Retrieved 3 July 2022.((cite web)): CS1 maint: archived copy as title (link) CS1 maint: bot: original URL status unknown (link)
  2. ^ Himmel, Daniel; Riedel, Sebastian (2007-05-31). "After 20 Years, Theoretical Evidence That "AuF7" Is Actually AuF5·F2". Inorganic Chemistry. 46 (13): 5338–5342. doi:10.1021/ic700431s. PMID 17511450.